Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C7/00—Optical parts
  • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
  • G02C7/104—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having spectral characteristics for purposes other than sun-protection

Definitions

• the invention belongs to the technical field of color blind correction, and particularly relates to a color blind correction glasses and a manufacturing method thereof.
• ZL98201888.6 patented product is a single-eye color-corrected lens, which will inevitably cause color difference, affecting vision and color blind correction.
• the technical problem to be solved by the present invention is to provide a color-blind correcting spectacles which can make the base color, hue, saturation and brightness in the eyes of a color blind patient normal, and a method of manufacturing the same.
• one side of the frame is mounted with a lens which corrects the proportion of the three primary colors to be normal
• the other side of the frame is mounted with a lens which improves the color perception and tends to be normal
• the lens which corrects the ratio of the three primary colors to normal is According to the color blindness category and the step, the correction lens with the corresponding correction light* curve is selected, and the corrective lens with the color vision brightness tends to be normal is selected according to the degree of improvement of the transmittance of 500-600 nm.
• the method for preparing the three-color proportional lens of the present invention is: first determining the type, step and color blind correction spectrum curve by the color vision detector, then dyeing the substrate, designing the film system according to the spectral curve, and then placing the substrate on the vacuum coating machine.
• the coating is carried out according to the film design process, and the last layer is chrome-plated;
• the lens for improving the color perception brightness is: first, the brightness is normalized by the color vision detector, and the ratio of the corrected three primary colors is unchanged, thereby determining the lens correction light Curve, then select the same substrate as the correcting three primary color ratio lens to dye the same color, design the film system according to the selected light curve, and then place the substrate in the vacuum coating machine according to the film design process, the last one
• the layer is chrome-plated, and the above two kinds of lenses are installed in the frame, that is, the color-blind correcting glasses.
• the advantages of the invention are: according to the human color blind correction mechanism and the physiology and psychological function of the human eyes, the primary color, the hue, the saturation and the lightness of the color blindness after wearing the color blindness tend to be Normal color-blind glasses achieve the goal of truly correcting color blindness.
• the stratum corneum of the retina is decomposed into three primary colors of red (R), green (G), and blue (B) and reflected to the face of red, green, and blue.
• Three kinds of cone cells respectively generate light stimulation values R, G, and B, and undergo matrix transformation through the retina to mediate the luminance signal L and the color difference signals II, V, and
• V v ( B-L )
• U is the red difference signal
• V R is the blue difference signal
• Ku and ⁇ ⁇ are the weighting coefficients
• L, U The V signal is transmitted from the three optic nerve fibers with different thicknesses to the corresponding cell layer of the lateral geniculate body through the optic chiasm.
• L, U, and V are decoded to reconcile the three primary color signals
• This type of color blindness is defined as full color blindness; when there are two poor performances in the three cones on the retina or received by the cerebral cortex There are two kinds of three primary color values, and the red, green or blue light in the patient's eye is defined as A R , A G , and A B color blind; when the three cones on the retina have a low or cerebral cortex The three primary color values received by the region have a low level, and the patient's red, green, or blue darkness in the eye is defined as B R , B G , and B B color blindness, respectively.
• the other six types of color blindness can achieve the purpose of improving color vision by changing the ratio of the three primary colors of the incident human eye from the outside, so that the proportion of the three primary colors received by the cerebral cortex tends to be normal.
• the correction principle of the present invention is as follows:
• the other eye is wearing a lens that maintains a normal brightness, and the brightness signal is ⁇ ' and the color difference signal ⁇ 7 and , and
• V K- ( b 7 ⁇ b- T ) (6)
• the outer geniculate body is decoded according to (4), (2) (3), ie from
• Figure 1 is a spectral curve of an A G6 color blind correcting lens of the present invention
• Figure 2 is a spectral curve of an A RG5 color-blind corrective lens.
• the number of brightness steps is detected by the upper and lower semicircles of the color vision detector. Firstly, the brightness of the lower semicircle is lowered. When the brightness of the lower semicircle is different from that of the upper semicircle, the brightness of the upper semicircle is lowered. When the red brightness of the upper semicircle is different from the lower semicircle, the red brightness of the lower semicircle is lowered, and so on, the brightness step can be measured. quantity. Perform the detection of the number of green and blue steps as described above. When the number of steps is the same as that of a normal person, it is verified that the corrected three primary colors are the same as normal people.
• the cerebral cortex is defined as white after receiving.
• the detection method is that the semicircle on the screen is a normal proportion of white, so that the patient uses the R+G+B ratio in the lower semicircle to be the same white as the upper semicircle.
• the correction index is reached. Similarly, it can be done. Tone ratio detection.

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• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Ophthalmology & Optometry (AREA)
• Spectroscopy & Molecular Physics (AREA)
• General Health & Medical Sciences (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Eyeglasses (AREA)
• Eye Examination Apparatus (AREA)

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Publications (1)

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ID=33557727

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Cited By (3)

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Citations (12)

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• 2003
  • 2003-07-08 CN CNA031276148A patent/CN1567028A/zh active Pending
• 2004
  • 2004-07-06 EP EP04738354A patent/EP1744201A4/en not_active Withdrawn
  • 2004-07-06 WO PCT/CN2004/000756 patent/WO2005003841A1/zh active Application Filing
  • 2004-07-06 US US10/563,729 patent/US20110090453A1/en not_active Abandoned
  • 2004-07-07 JP JP2004200106A patent/JP5110760B2/ja not_active Expired - Fee Related

Patent Citations (12)

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